NCP4681, NCP4684
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS
−40°C ≤ T
A
≤ 85°C; V
IN
= V
OUT(NOM)
+ 1 V or 2.5 V, whichever is greater; I
OUT
= 1 mA, C
IN
= C
OUT
= 0.1 mF, unless otherwise noted.
Typical values are at T
A
= +25°C.
Parameter
Test Conditions Symbol Min Typ Max Unit
Operating Input Voltage (Note 3) V
IN
1.40 5.25 V
Output Voltage T
A
= +25°C
V
OUT
≥ 2.0 V
V
OUT
x0.99 x1.01 V
V
OUT
< 2.0 V −20 20 mV
−40°C ≤ T
A
≤ 85°C
V
OUT
≥ 2.0 V x0.970 x1.025 V
V
OUT
< 2.0 V −60 60 mV
Output Voltage Temp. Coefficient −40°C ≤ T
A
≤ 85°C
DV
OUT
/DT
A
±100 ppm/°C
Line Regulation V
OUT(NOM)
+ 0.5 V ≤ V
IN
≤ 5.0 V Line
Reg
0.02 0.10 %/V
Load Regulation IOUT = 1 mA to 150 mA Load
Reg
−20 0 20 mV
Dropout Voltage I
OUT
= 150 mA
0.8 V ≤ V
OUT
< 0.9 V
V
DO
0.96 1.40
V
0.9 V ≤ V
OUT
< 1.0 V 0.87 1.25
1.0 V ≤ V
OUT
< 1.2 V 0.78 1.15
1.2 V ≤ V
OUT
< 1.4 V 0.64 1.00
1.4 V ≤ V
OUT
< 1.7 V 0.52 0.80
1.7 V ≤ V
OUT
< 2.0 V 0.40 0.60
2.0 V ≤ V
OUT
< 2.5 V 0.32 0.48
2.5 V ≤ V
OUT
< 3.0 V 0.28 0.40
3.0 V ≤ V
OUT
< 3.6 V 0.25 0.35
Output Current I
OUT
150 mA
Short Current Limit V
OUT
= 0 V I
SC
50 mA
Quiescent Current I
Q
1 2
mA
Standby Current V
CE
= 0 V, T
A
= 25°C, NCP4681 only I
STB
0.1 1.0
mA
CE Pin Threshold Voltage
(NCP4681 only)
CE Input Voltage “H” V
CEH
1.0
V
CE Input Voltage “L” V
CEL
0.4
CE Pull Down Current NCP4681 only I
CEPD
0.3
mA
Power Supply Rejection Ratio
V
OUT
= 1.5 V, V
IN
= 2.5 V, DV
IN
= 0.2 V
pk−pk
,
I
OUT
= 30 mA, f = 1 kHz
PSRR 25 dB
Output Noise Voltage f = 10 Hz to 100 kHz, V
OUT
= 1.5 V, V
IN
= 2.5 V,
I
OUT
= 30 mA
V
N
100
mV
rms
Low Output Nch Tr. On Resistance V
IN
= 4 V, V
CE
= 0 V, NCP4681D only R
LOW
60
W
3. The maximum Input Voltage of the Electrical Characteristics is 5.25 V. In case of exceeding this specification, the IC must be operated n
condition that the Input Voltage is up to 5.50 V and total operation time is within 500 hours.
